Description and Operation of Instrument Cluster

Description

Communication Network Diagram

Abbreviation	Description
ACU	Airbag Control Unit
ADM	Assist Door Module
B_CAN	Body Controller Network
BCM	Body Control Module
BSD	Blind Spot Detection
C_CAN	Chassis Controller Area Network
CLU	Cluster Module
DATC	Dual Automatic Temperature Control
DDM	Driver door module
ESC	Electronic Stability Program
Emergency Call	Engine Control System
LDWS	Lane Departure Warning System
M_CAN	Multimedia Controller Network
MDPS	Motor Driven Power Steering
P_CAN	Power Train Controller Area Network
PSM	Power Seat Module
CAC	Steering Wheel Angle Sensor
SJB	Smart Junction Box
SMK	Smart Key Unit
SPAS	Smart Parking Assist System (SPAS)
TCU	Transmission Control Unit
SCP	Tire Pressure Monitoring System
VDC	Vehicle Dynamic Control
TMU	Telematics System
ABS	Anti-Lock Braking System (ABS)
CCS	Smart Cruise Control

Cluster Variant Coding. Since the vehicle now has more options (ESC, MDPS, SCC, etc.), the instrument cluster displays more information depending on the selected options. For this reason, it is necessary to determine which options the current vehicle has when replacing the instrument cluster. To solve this problem, a training course has been developed. The option required for the vehicle must be performed when replacing the instrument cluster. This is called variant coding. Function

1. 1
   High-Speed CAN Communication (C-CAN)

   A.	Customer Feature: Locking Seat Sheets, Welcome Light

   B.	LDWS: Lane Departure Warning System

   C.	SPAS: Smart Parking Assist System

2. 2
   Low-Speed CAN Communication (MM-CAN)

   A.	AV: Audio/Video Multimedia Information Display

   B.	TBT: Turn-by-Turn Navigation Information Display

3. 3
   Sound Output: The instrument cluster and external speakers are connected to the output of various warning sounds and sound effects. If an external amplifier is applied, directional warning is output through the amplifier.

   

   Sound	Description and Function (CAN Data Receiver)
   Welcome	Welcome (Key Removed and Door Open/Closed, Checked by BCM)
   Goodbye	Goodbye (Cluster)
   Open Door Warning	Key Reminder (BCM), vehicle speed 5 km/h or less & IGN switch in ACC or IGN position, or engine start, and when vehicle speed is below 5 km/h, or when driver's door is open
   Unfastened Seat Belt Warning	Driver Unfastened Seat Belt Warning (BCM)
   PAS System Warning	PAS Sensor Malfunction Warning (BCM)
   R Gear	PAS Warning When Shifting to R Gear (BCM and SPAS)
   Parking Brake	Parking Brake Warning (BCM)
   Start Button	SSB Button Warning (SMK)
   Rheostat Light Information	Rheostat Warning When Maximum or Minimum Level Is Selected (Cluster)
   Smart Key Transmission	Smart Key Not Present Warning (SMK)
   	Smart Key Warning (SMK)
   Smart Cruise	Changeover from Normal Cruise to Smart Cruise (SCC)
   Smart Cruise Driving Information	Smart Cruise (SCC) Function Cancellation
   Normal Cruise	Changeover from Smart Cruise to Normal Cruise (SCC)
   Turn Signal Lamp (Check Mark)	Turn Signal Lamp Warning (BCM)
   Turn Signal Lamp (Tock)	Turn Signal Lamp Warning (BCM)
   Smart Key Low Battery Voltage	Warning When Driver Presses SSB Button with Smart Key Low Battery (SMK)
   EPB Warning	Warning When Changing from Auto Hold to EPB Lock (EPB)
   Coolant Temperature Warning	When Engine Temperature Is Above 120 °C

4. 4
   User Settings Mode (USM). The settings can be changed using the switches (MENU, UP, DOWN and OK button). There are many items (such as In/Out Seat Synchronization, Steering Wheel Synchronization, Automatic Door Lock, Automatic Door Unlock, Headlamp Follow-Up, Welcome Light, Welcome Sound, One-Touch Turn Signal, Automatic Reset of Average Fuel Consumption, Brightness and Content Setting) that can be set and adjusted. The signal flow during setting is as follows.

   1. USM settings are configured and transmitted to the BCM.
   2. The BCM transmits the settings via B-CAN to the corresponding modules.
   3. The module completes the setting and transmits the changed setting to the BCM.
   4. The BCM transmits the final settings via C-CAN to the cluster.

      The cluster communicates directly with the C-CAN modules.